Fig. 3.
Natural variation in the kinetic properties of Rubisco in vitro at 25°C. See Table 1 for a listing of the data and their sources. The organisms from which the Rubiscos were isolated were: Ag, Atriplex glabriuscula (C3 dicot); Ah, Amaranthus hybridus (C4 dicot); Av, Anabaena variabilis (cyanobacterium); Cr, Chlamydomonas reinhardtii (green alga); Cv, Chromatium vinosum (bacterium); Eg, Euglena gracilis (green alga); Gm, Griffithsia monilis (red alga); Gs, Galdieria sulfuraria (red alga); Nt, Nicotiana tabacum (C3 dicot); Os, Oryza sativa (C3 monocot); Pt, Phaeodactylum tricornutum (diatom); Rr, Rhodospirillum rubrum (bacterium); Rs, the bacterial symbiont of the tubeworm Riftia pachyptila; Sb, Sorghum bicolor (C4 monocot); So, Spinacia oleracea (C3 dicot); S6301, Synechococcus PCC 6301 (cyanobacterium); S7002, Synechococcus PCC 7002 (cyanobacterium); Ta, Triticum aestivum (C3 monocot); and Zm, Zea mays (C4 monocot). Dashed and dotted lines are linear regressions through all of the data except for the cyanobacterial outliers (triangles) in A and B, which were excluded.